Raman scattering properties of a protonic titanate HxTi2-x/4□x/4O4•H2O (□, vacancy; x=0.7) with lepidocrocite-type layered structure

被引：77

作者：

Gao, Tao ^{[1
]}

Fjellvag, Helmer ^{[1
]}

Norby, Poul ^{[1
]}

机构：

[1] Univ Oslo, Dept Chem, Ctr Mat Sci & Nanotechnol, N-0315 Oslo, Norway

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2008年 / 112卷 / 31期

关键词：

D O I：

10.1021/jp801639a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Raman scattering spectroscopy is employed to characterize a layered titanate HxTi2-x/4 square O-x/4(4)center dot H2O (square: vacancy; x = 0.7) with lepidocrocite (gamma-FeOOH)-type layered structure. Nine Raman lines corresponding to (3A(g) + 3B(1g) + 3B(3g)) Raman-active modes expected from this orthorhombic structure (space group D-2h(25)-Immm) are recorded at 183, 270, 387, 449, 558, 658, 704, 803, and 908 cm(-1), which are assigned to Ti-O lattice vibrations within the two-dimensional (2D) lepidocrocite-type TiO6 octahedral host layers. These intrinsic Raman bands present a clear signature that can be used for probing the protonic titanate HxTi2-x/4 square O-x/4(4)center dot H2O and the 2D titanate nanosheets, as well as their corresponding derivates.

引用

页码：9400 / 9405

页数：6

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